Heat 1 to 1-1/2 inches oil in Dutch oven or large skillet over medium-high heat until oil registers 360°F to 375°F on deep-fry thermometer. Place 4 patties on slotted spoon and lower into hot oil.

Fry patties in batches 2 to 3 minutes or until golden and fish is opaque in center. (Do not crowd pan. Allow oil to return to temperatur between batches.) Remove with slotted spoon to paper towels; drain.